Observation of the $\beta$-delayed $\gamma$-proton decay of ${}^{56}$Zn and its impact on the Gamow Teller strength evaluation

S. E. A. Orrigo, B. Rubio, Y. Fujita +25

We report the observation of a very exotic decay mode at the proton drip-line, the $\beta$-delayed $\gamma$-proton decay, clearly seen in the $\beta$ decay of the $T_z$ = -2 nucleus ${}^{56}$Zn.…